Burn Subtitles onto Video or Auto-Generate with AI.
Already have an SRT or VTT? Upload your video and subtitles to burn animated captions with perfect sync. Don't have subtitles? Let AI transcribe word-for-word and export watermark-free MP4 or subtitle files in seconds.
Upload Video & Subtitle File
Have a video file? Upload your video and subtitle file to sync, style, and burn them into high-res MP4 with zero watermark.
Don't have subtitles yet? Cloudflare Whisper AI can automatically extract and generate timestamped subtitles from your video audio.
🎙️ AI Auto-Caption (Video/Audio)
Supports MP4, MOV, WEBM, MP3, WAV, M4A · 100% Client-Side Privacy
Paste Your Script or Lyrics
Our smart auto-segmentation algorithm breaks your text into optimal caption lengths and calculates exact timestamps.
Live Subtitle & Video Preview
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Why Creators Choose FreeAutoCaption
The complete subtitle workflow: upload subtitles to burn, or generate new ones with AI.
AI Word-Level Precision
Cloudflare Workers AI Whisper transcription matches speech word-by-word across 100+ languages.
Viral Hormozi & Beast Styles
Boost retention by up to 80% with animated word-by-word highlights, bold punch fonts, and colorful glows.
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Multi-Format Subtitle Suite
Convert and export cleanly between SRT, VTT, ASS, JSON, and TXT with full timing fidelity.
Universal Subtitle Video Burner
Already have an SRT, VTT, or ASS file? Upload it with your video to hardcode styled animated captions with zero lag.
100% Free · No Watermark
No subscriptions, no hidden limits, and no watermark on your exported videos.
Trending Subtitle Animations
Choose from trending typography presets or customize animations to fit your brand identity.
Hormozi Punch
High-contrast bold punch designed for high retention on YouTube Shorts & TikTok.
MrBeast Pop
Heavy 2px black outline with vibrant neon blue bounce for gaming and high-energy content.
Cinematic Box
Frosted translucent backdrop box tailored for documentaries, interviews, and brand videos.
Neon Cyberpunk
Electric cyan and magenta glow effects perfect for music clips, gaming, and tech reels.
Karaoke Wave
Progressive vibrant green highlight wave that guides the viewer word-by-word.
Minimalist Clean
Understated elegance for tutorials, podcasts, and corporate presentations.
FreeAutoCaption vs Caption X & Competitors
See how FreeAutoCaption delivers professional features without paywalls or watermarks.
| Feature | FreeAutoCaption.com | Caption X | CapCut Pro | Kapwing |
|---|---|---|---|---|
| 100% Free Forever | ✓ | Paid Tier for Pro | Paid Pro | Watermarked |
| No Watermark on Video Exports | ✓ | Watermark on Free | ✕ | ✕ |
| Upload Existing Subtitles (.SRT/.VTT/.ASS) | ✓ | ✓ | ✕ | ✕ |
| Subtitles Word-by-Word Animation | ✓ | ✓ | ✓ | Paid Only |
| Social Media Safe Zone Overlays | ✓ | ✕ | ✕ | ✕ |
| In-Browser Privacy & Speed | ✓ | Cloud Audio Upload | App Install | Cloud Queue |
| Free Subtitle File Downloads (.SRT, .VTT, .ASS) | ✓ | ✓ | SRT Only | Paid Only |
Empowering Over 500,000+ Creators Worldwide
100% Client-Side Privacy: Your audio, video, and scripts are processed locally in your browser and never uploaded to third-party databases.
Frequently Asked Questions
Everything you need to know about generating, styling, and exporting subtitles for free.
Is Subtitle Generator Free completely free to use?+
Yes, 100% free with no hidden paywalls, no credit card requirements, and no watermarks on your videos or subtitle files.
How do I generate subtitles from an existing script or text?+
Simply click the "Script to Subtitles" tab in our studio, paste your raw transcript or lyrics, adjust your preferred reading speed (WPM), and click "Auto-Generate Subtitle Cues". Our algorithm will segment the sentences into optimal lines and calculate exact timestamps automatically.
Can I burn the animated subtitles directly into my video file?+
Yes! In the Live Video Studio tab, you can customize the caption animations, positions, and fonts, then click "Export Video (Burn-In Subtitles)" to render and download your video with hardcoded subtitles directly in your browser.
What subtitle export formats are supported?+
You can export industry-standard .SRT (SubRip) files, .VTT (WebVTT) files for web players, and .TXT plaintext transcripts, as well as copy timestamped cues directly to your clipboard in one click.
Is my audio and video data kept private and secure?+
Absolutely. Subtitle Generator Free operates client-side inside your browser sandbox. Your media files and scripts are processed locally and are never stored or uploaded to third-party databases.
What video aspect ratios are supported for social media?+
Our studio supports 9:16 vertical (TikTok, Instagram Reels, YouTube Shorts), 16:9 widescreen (YouTube, TV, Presentations), and 1:1 square (Instagram feed, LinkedIn, Facebook).
Ready to Make Your Videos Go Viral?
Start creating professional animated subtitles right now — free forever.
Open Subtitle Studio Free